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biebergeo

find a b c d diagram attached!

  • one year ago
  • one year ago

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  1. biebergeo
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    |dw:1335311854394:dw|

    • one year ago
  2. LyraElizabethAdams
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    Okay . . . . do you know if the four angles in the middle are all right angles?

    • one year ago
  3. biebergeo
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    |dw:1335312024131:dw|

    • one year ago
  4. biebergeo
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    no i don't kno it doesn't indicate

    • one year ago
  5. LyraElizabethAdams
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    Okay

    • one year ago
  6. LyraElizabethAdams
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    Does the problem give any other info., or is what you put up all they give you?

    • one year ago
  7. biebergeo
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    that is all it gave :( i can't figure it out.

    • one year ago
  8. LyraElizabethAdams
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    Okay, I understand . . . don't worry

    • one year ago
  9. biebergeo
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    do you understand it?

    • one year ago
  10. LyraElizabethAdams
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    One sec . . . I'm looking up a rule for this

    • one year ago
  11. biebergeo
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    okay thanks

    • one year ago
  12. LyraElizabethAdams
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    Well, I thought that you might need to use the property for adjacent angles (with alternate interior, exterior, etc.), but I'm not sure if that would work, here. As I'm a bit rusty with this, let me see if I can get someone else on here, to help you . . . .

    • one year ago
  13. biebergeo
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    that sounds familiar maybe you are correct

    • one year ago
  14. LyraElizabethAdams
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    I'm asking someone to see if he can help you . . . 1 sec

    • one year ago
  15. LyraElizabethAdams
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    Remember that the key thing here, is that triangles have 180 degrees

    • one year ago
  16. mubzz
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    For angles in the same segment, angle at centre is twice angle at the circumference. Therefore, b = 2*53 = 106 b and c are angles on a straight line and their sum should be 180, therefore c = 180-106 c= 74 for a, again use the same property used to find b, therefore a is also 53 Another property is that the angle subtended by the diameter (in this case it is the line that passes through centre and touches a b and c) is always 90. Therefore (d+53)=90 Answers: a = 53 b = 106 c = 74 d = 37

    • one year ago
  17. LyraElizabethAdams
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    Ah . . . thanks mubzz!

    • one year ago
  18. biebergeo
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    THANK YOU!!!!!!!!!!!!!!!!!!!!!!!!!

    • one year ago
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